The instrumentalvariable in this instance allows a clear, credible estimate of the return from extra schooling for those most inclined to drop out from school early.
在这一研究中,对于那些倾向于尽早离开学校的人而言,使用辅助变量法就能够得出清晰可信的结果。
2
The instrumentalvariable method and LILC criterion are used to estimate the order and parameter of electro-hydraulic position and force coupled system.